An 'A' model is the four seat variant - it's older and only has two windows on each side. There then followed the B and C models and also the T (for Turbo). Piper used to nominate all of their aircraft alphabetically but switched to numbers and names around the time of the Warrior.
I am unwilling to mention names because they have not been released in the press - at least as far as I know.
The aircraft was, however, group owned. Reg G-ARIE